I have Kindle 5th generation, model number D01100. I had this problem for few years now and I gave up. Recently I tried to turn it on and to my surprise it worked. Unfortunately after reboot it showed the same message: "Your Kindle needs repair. Please contact Kindle Customer service at kindle.com/support". I don't understand why did it turn on and why is it bricked again. I tried holding power button for 40 seconds but nothing happens. I plugged it to my PC but it is not detected.